Cradle motor



Sept. .10, 1929. F. J. HABURCAK A 1,727,766

CRADLE MOTOVR 30 29A 23 7 l r k@ 23 *en V11." a 581 zo /2 "i a f/ w jg.'7 4E' 7g 73 antw/1410@ inl-Hahn? Dak vll/11111711]n Patented Sept. 10,1929.

UNETED STATES FRANK J. T:IABURCK, OF CLEVELAND, OHEO.

CRADLE MOTOR.

Application tiled September 22, 1926.

This invention has Jfor its object the provision of an operatingmechanism which will be compact and especiallv adapted to be disposedunder a rocking crib body and within the 'lines of t-he supporting'trame so vthat it will be protected against derangement Ifrom chanceblows, and will act automatically to propel the cradle in oppositedirections whereby to import oscillation thereto and will continue tooperate as long as desired. Other incidental objects ot the inventionwill appear in the course of the tollowing description, and theinvention resides in certain novel features which will be particularlypointed out in the appended claim.

. In the accompanying drawings Fig. l is an enlarged longitudinalsection through the motor;

Fig. 2 is a perspective view of the motor with the circuits foroperating the same shown diagrammatically;

Fig. 3 is a detail sect-ional elevation of one end of the push rod, and

Fig. l is a detail perspective ot the movable circuit closer.

The motor is carried by the cradle-supporting frame adjacent one endthereof and comprises two solenoids or magnets 11 and 12, and a push rod18 which constitutes the core of the said magnets and is disposed allythereof. The ends of the push rod 13 are constructed with sockets 14 toreceive the inner ends of plungers 15, a spring 16 being seated in eachsocket 14E and bearing` at its opposite ends respectively against theinner end of the plunger and the bottom of the socket, as clearly shownin Fig. 3. The outer end of each plunger presses against a brace 17forming a part ot' the cradle body and a metallic wear plate 18 ispreferably secured upon the inner tace ot the brac whereby to minimizewear due to the pressure and movement ot the plunger. it will beunderstood that to rock the cradle a reciprocatory motion is imparted tothe push rod so that it will press against the opposite braces 17alternately and thereby push the cradle alternately in oppositedirections, and the springs 16 serve to maintain the contact between theplungers and vthe cradle body Serial No. 137,054.

while at the same time yielding to the rever-- sal ot movement so thatnoisy shock will be avoided. The push rod or core is carried by groovedrollers 19 whereby it is guided and held to a rectilinear path, andthese rollers are located adjacent the opposite ends ot the motor. lTherollers are carried by brackets 2O which are secured transversely to theupper beams 7 of the cradle-supporting frame and, as shown most clearlyin Fig. 2, may conveniently consist ot flat bars or straps having theirends turneddownwardly to pass at opposite sides ot the core or push rodand terminating in eyes 21 sup" porting the axles 22 ot the rollers.llocks 23 are secured uponthe brackets 2O between the beams 7 and atopposite sides ot' the center ot the brackets, which blocks are suitablyinsulated from the brackets, and carried by and disposed between thesaid blocks is a trame 2e having sockets or open bearings 25 at itscenter upon its sides to receive the trunnions 2G extending from amovable switch or contact member 27. The lower end of this switch isdisposed obvi ously between the magnets or solenoids 1 1 and 12 and willrest upon or be disposed in the path ot' a piston 2S secured upon thepush rod at the center of the same. The trunnions 26 are located.somewhat above the center ot the switch or circuit closer 27 so that theweight thereof will tend to hold it in a perpendicular position and,therefore, it the piston 2S be moved to either side ot the centralvertical plane of the space between the magnets, the circuit closer willswing into a vertical position with its end below the high point of thepiston and in the path of the same. Consequently, when the piston ismoved toward the movable contact member or switch 27, the end ot thepiston will impinge against the end of the switch and rock the same, aswill be understood on reference to Fig. 1. The movement of the plungercontinues until it clears the switch, whereupon the weight of the switchfill return it to its vertical position breaking the circuit andcle-energizing 'the magnet.

Upon each block 23 are secured spaced contacts 29 and at the upper endot the switch 27 is a cross bar 30 which, when the switch is rocked tothe limit of its movement, will bridge the adjacent contacts and closethe circuit through the saine. The magnets are suspended from thebrackets 29 by angle plates 31 which are secured to the ends of themagnets and to the brackets respectively, as shown clearly in Fig. l.Referring now more particularly to 2, it will be noted that two of thecontacts 29 are connected electrically by a conductor 32 and oneconductor 33 of the leading-in vlcable 34 is connected by branches 35with the respective windings of the solenoids or electro-magnets. Theopposite end of the magnet ll is connected by a conductor 36 with acontact 29 located over the magnet 12 and the magnet l2 is, in turn,connected by a conductor 37 with the contact 29 over the magnet il,while the conductor 38 ot the leading-in cable is connected with one ofthe contacts 29 to which is secured one end ot the conductor 32.Assuming the parts to be in the position shown in Figs. l and 2, it willbe noted that the electric current passes over the conductoreS to thetorward contact 29 at the right ol' the drawings, thence through theconductor 32 to the forward. contact 29 at the left ot' the dr wings andthen through the circuit closing member to the companion Contact 29whence it flows through the conductor 37 to the magnet l2, through thewinding ol' said magnet and out through the conductors and 33, therebyenergizing the magnet and causing the push rod or core to move to theright in the drawings, and swing the cradle body in the same direction.As soon as the piston 2S carried by the push rod or core clears thelower end of the switch 27, the switch will swing to a vertical positionand the circuit will be thereby broken because the bridging contact 30will be moved trom the corresponding contacts 29. The momentum of thecradle body, however, will continue momentarily and then the .veight ofthe cradle body will reverse its movement and willetlect initial reversetravel ot the push rod. The reverse travel ot the push rod will, ofcourse, cause the piston 28 to impinge against the lower end ot theswitch 27 and swing the Contact member 39 over into engagement with thecontacts 29 at the right ot the drawings, whereupon the current willflow from the front contact 29 at the right through the contact 30 tothe contact 29 in rear thereof and thence through the conductor 36 tothe magnet ll and pass from the said magnet through the conductors 35and 33. The magnet ll will .thus be energized and will carry the core orpush rod beyond the central vertical plane of the apparatus so that themovement of the cradle body will be continued and it will not bepermitted to come to rest. The circuit will again be automaticallybroken at the rightot the drawings and then closed at the lett and thisalternate movement will. continue as long as the current is permitted totlow to the motor. For convenience, the leading-in wires may beconnected to a switch which, in turn, will be connected with the housecircuit in a well known manner by the use of extension cords orconductors.

F rom the foregoing description, taken in connection with theaccompanying drawings, it will be seen that I have provided a verysimple, compact and inexpensive mechanism which may be readily appliedto a cradle and which will operate automatically to impart oscillationto the cradle.

Having thus described the invention, I claim:

The combination of a pair ot axially alincd solenoids, a push rodextending through and constituting a core for the solenoids and havingits ends in engagement with a member to be oscillated, pairs ot'contacts arranged adjacent the opposed ends of the respective solenoidsand disposed in planes transverse to the solenoids, one contact overeach solenoid being elcctri :ally connected with a terminal ot the othersolenoid and the other contacts being electrically connected with eachother, leadingin conductors one connected with one ot the last-mentionedcontacts and one connected with the terminals of the solenoids, a.support between the pairs ot contacts, a switch member disposed betweenthe pairs of contacts and provided with lateral trunnions iournaled onsaid support, the switch memer having a cross bar at its upper end andhaving its lower end adjacent the push rod, and a piston on the push rodarranged to impinge against and ride under the lower end ot the switchmember to rock said member and cause the cross bar thereon to bearagainst and bridge either pair ot contacts whereby to energize thesolenoids alternately.

In testimony whereof I aiiix my signature.

raamt J. Hanni-toria. p.. s]

